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<a href="a00560.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* ========================================================================= *</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *                                                                           *</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *                               OpenMesh                                    *</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *           Copyright (c) 2001-2015, RWTH-Aachen University                 *</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *           Department of Computer Graphics and Multimedia                  *</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> *                          All rights reserved.                             *</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> *                            www.openmesh.org                               *</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *                                                                           *</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *---------------------------------------------------------------------------*</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * This file is part of OpenMesh.                                            *</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> *---------------------------------------------------------------------------*</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *                                                                           *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * Redistribution and use in source and binary forms, with or without        *</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * modification, are permitted provided that the following conditions        *</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * are met:                                                                  *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> *                                                                           *</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * 1. 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IN NO EVENT SHALL THE COPYRIGHT HOLDER *</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,  *</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,       *</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"> * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR        *</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"> * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    *</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING      *</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS        *</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              *</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"> *                                                                           *</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> * ========================================================================= */</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">//=============================================================================</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">//  CLASS McDecimaterT - IMPLEMENTATION</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">//=============================================================================</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#define OPENMESH_MULTIPLE_CHOICE_DECIMATER_DECIMATERT_CC</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">//== INCLUDES =================================================================</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="a00557.html">OpenMesh/Tools/Decimater/McDecimaterT.hh</a>&gt;</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#if defined(OM_CC_MIPS)</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#  include &lt;float.h&gt;</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#  include &lt;cfloat&gt;</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor"># include &lt;OpenMesh/Core/Utils/RandomNumberGenerator.hh&gt;</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">//== NAMESPACE ===============================================================</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="keyword">namespace </span><a class="code" href="a01233.html">OpenMesh</a> {</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="keyword">namespace </span>Decimater {</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">//== IMPLEMENTATION ==========================================================</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Mesh&gt;</div><div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="a02645.html#afe1195415c6af21ccf2a887311f049ed">   76</a></span>&#160;<a class="code" href="a02645.html#afe1195415c6af21ccf2a887311f049ed">McDecimaterT&lt;Mesh&gt;::McDecimaterT</a>(Mesh&amp; _mesh) :</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <a class="code" href="a02629.html">BaseDecimaterT</a>&lt;Mesh&gt;(_mesh),</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    mesh_(_mesh), randomSamples_(10) {</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;  <span class="comment">// default properties</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  mesh_.request_vertex_status();</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;  mesh_.request_halfedge_status();</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  mesh_.request_edge_status();</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  mesh_.request_face_status();</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;}</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">//-----------------------------------------------------------------------------</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Mesh&gt;</div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="a02645.html#a61aed0a3dbbe2d939c2a99e5f3533454">   91</a></span>&#160;<a class="code" href="a02645.html#a61aed0a3dbbe2d939c2a99e5f3533454">McDecimaterT&lt;Mesh&gt;::~McDecimaterT</a>() {</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <span class="comment">// default properties</span></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  mesh_.release_vertex_status();</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  mesh_.release_edge_status();</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  mesh_.release_halfedge_status();</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  mesh_.release_face_status();</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;}</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">//-----------------------------------------------------------------------------</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Mesh&gt;</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="a02645.html#a970cfba9e739a07ff77fa1969e97ad82">  102</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="a02645.html#a970cfba9e739a07ff77fa1969e97ad82">McDecimaterT&lt;Mesh&gt;::decimate</a>(<span class="keywordtype">size_t</span> _n_collapses) {</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#ac01a4c49f9efd1de8ef886f7ff2b58ca">is_initialized</a>())</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n_collapses(0);</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  <span class="keywordtype">bool</span> collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="comment">// old n_collapses in order to check for convergence</span></div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oldCollapses = 0;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  <span class="comment">// number of iterations where no new collapses where</span></div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="comment">// performed in a row</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> noCollapses = 0;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;  <a class="code" href="a02613.html">RandomNumberGenerator</a> randGen(mesh_.n_halfedges());</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">bool</span> update_normals = mesh_.has_face_normals();</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  <span class="keywordflow">while</span> ( n_collapses &lt;  _n_collapses) {</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordflow">if</span> (noCollapses &gt; 20) {</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;      omlog() &lt;&lt; <span class="stringliteral">&quot;[McDecimater] : no collapses performed in over 20 iterations in a row\n&quot;</span>;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    }</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="comment">// Optimal id and value will be collected during the random sampling</span></div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle bestHandle(-1);</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle tmpHandle(-1);</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordtype">double</span> bestEnergy = FLT_MAX;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="keywordtype">double</span> energy = FLT_MAX;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    <span class="comment">// Generate random samples for collapses</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i &lt; (int)randomSamples_; ++i) {</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;      <span class="comment">// Random halfedge handle</span></div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle(<span class="keywordtype">int</span>(randGen.getRand() * double(mesh_.n_halfedges() - 1.0)) );</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle( (<span class="keywordtype">double</span>(rand()) / <span class="keywordtype">double</span>(RAND_MAX) ) * <span class="keywordtype">double</span>(mesh_.n_halfedges()-1) );</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;      <span class="comment">// if it is not deleted, we analyse it</span></div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;      <span class="keywordflow">if</span> ( ! mesh_.status(tmpHandle).deleted()  ) {</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, tmpHandle);</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        <span class="comment">// Check if legal we analyze the priority of this collapse operation</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        <span class="keywordflow">if</span> (this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci)) {</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            energy = this-&gt;<a class="code" href="a02629.html#a3046073cf42608d314df3c4dfc2d49b4">collapse_priority</a>(ci);</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            <span class="keywordflow">if</span> (energy != <a class="code" href="a02661.html">ModBaseT&lt;Mesh&gt;::ILLEGAL_COLLAPSE</a>) {</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;              <span class="comment">// Check if the current samples energy is better than any energy before</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;              <span class="keywordflow">if</span> ( energy &lt; bestEnergy ) {</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                bestEnergy = energy;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                bestHandle = tmpHandle;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;              }</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            }</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;          <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        }</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;      }</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    }</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="comment">// Found the best energy?</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keywordflow">if</span> ( bestEnergy != FLT_MAX ) {</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;      <span class="comment">// setup collapse info</span></div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;      <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, bestHandle);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;      <span class="comment">// check topological correctness AGAIN !</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci))</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;      <span class="comment">// pre-processing</span></div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;      this-&gt;<a class="code" href="a02629.html#a5a2763cdc33d785a1f53aed2168a7189">preprocess_collapse</a>(ci);</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;      <span class="comment">// perform collapse</span></div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;      mesh_.collapse(bestHandle);</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;      ++n_collapses;</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;      <span class="comment">// store current collapses state</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;      oldCollapses = n_collapses;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;      noCollapses = 0;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;      collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;      <span class="comment">// update triangle normals</span></div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;      <span class="keywordflow">if</span> (update_normals)</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;      {</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        <span class="keyword">typename</span> <a class="code" href="a02389.html#a1ebe8b94ca30db3af44c809ab3ee7247">Mesh::VertexFaceIter</a> vf_it = mesh_.vf_iter(ci.<a class="code" href="a02633.html#a7e472c32525398eeb34cad7c52aa3651">v1</a>);</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        <span class="keywordflow">for</span> (; vf_it.is_valid(); ++vf_it)</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;          <span class="keywordflow">if</span> (!mesh_.status(*vf_it).deleted())</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            mesh_.set_normal(*vf_it, mesh_.calc_face_normal(*vf_it));</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;      }</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;      <span class="comment">// post-process collapse</span></div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;      this-&gt;<a class="code" href="a02629.html#a8a3153d5847b381262fc15d110c3f10e">postprocess_collapse</a>(ci);</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;      <span class="comment">// notify observer and stop if the observer requests it</span></div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#a181b92fd81aea37771dbbe9d0f7b4b30">notify_observer</a>(n_collapses))</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;          <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;      <span class="keywordflow">if</span> (oldCollapses == n_collapses) {</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;        <span class="keywordflow">if</span> (collapsesUnchanged == <span class="keyword">false</span>) {</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;          noCollapses = 1;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;          collapsesUnchanged = <span class="keyword">true</span>;</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;          noCollapses++;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        }</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;      }</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    }</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;  }</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;  <span class="comment">// DON&#39;T do garbage collection here! It&#39;s up to the application.</span></div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;}</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment">//-----------------------------------------------------------------------------</span></div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Mesh&gt;</div><div class="line"><a name="l00226"></a><span class="lineno"><a class="line" href="a02645.html#a24b41676c8b93a5587a2bb36dbfb0b94">  226</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="a02645.html#a24b41676c8b93a5587a2bb36dbfb0b94">McDecimaterT&lt;Mesh&gt;::decimate_to_faces</a>(<span class="keywordtype">size_t</span> _nv, <span class="keywordtype">size_t</span> _nf) {</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;  <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#ac01a4c49f9efd1de8ef886f7ff2b58ca">is_initialized</a>())</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;  <span class="comment">// check if no vertex or face contraints were set</span></div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;  <span class="keywordflow">if</span> ( (_nv == 0) &amp;&amp; (_nf == 1) )</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="a02645.html#abb7c3b986b8319da869023e2c1dfc44b">decimate_constraints_only</a>(1.0);</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <span class="keywordtype">size_t</span> nv = mesh_.n_vertices();</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <span class="keywordtype">size_t</span> nf = mesh_.n_faces();</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n_collapses(0);</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;  <span class="keywordtype">bool</span> collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  <span class="comment">// old n_collapses in order to check for convergence</span></div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oldCollapses = 0;</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;  <span class="comment">// number of iterations where no new collapses where</span></div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;  <span class="comment">// performed in a row</span></div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> noCollapses = 0;</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;  <a class="code" href="a02613.html">RandomNumberGenerator</a> randGen(mesh_.n_halfedges());</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">bool</span> update_normals = mesh_.has_face_normals();</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;  <span class="keywordflow">while</span> ((_nv &lt; nv) &amp;&amp; (_nf &lt; nf)) {</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keywordflow">if</span> (noCollapses &gt; 20) {</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;      omlog() &lt;&lt; <span class="stringliteral">&quot;[McDecimater] : no collapses performed in over 20 iterations in a row\n&quot;</span>;</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    }</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="comment">// Optimal id and value will be collected during the random sampling</span></div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle bestHandle(-1);</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle tmpHandle(-1);</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keywordtype">double</span> bestEnergy = FLT_MAX;</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keywordtype">double</span> energy = FLT_MAX;</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    <span class="comment">// Generate random samples for collapses</span></div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; (int) randomSamples_; ++i) {</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;      <span class="comment">// Random halfedge handle</span></div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle(<span class="keywordtype">int</span>(randGen.getRand() * double(mesh_.n_halfedges() - 1.0)) );</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle( ( <span class="keywordtype">double</span>(rand()) / <span class="keywordtype">double</span>(RAND_MAX) ) * <span class="keywordtype">double</span>(mesh_.n_halfedges() - 1));</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;      <span class="comment">// if it is not deleted, we analyse it</span></div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;      <span class="keywordflow">if</span> (!mesh_.status(tmpHandle).deleted()) {</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, tmpHandle);</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        <span class="comment">// Check if legal we analyze the priority of this collapse operation</span></div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <span class="keywordflow">if</span> (this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci)) {</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;            energy = this-&gt;<a class="code" href="a02629.html#a3046073cf42608d314df3c4dfc2d49b4">collapse_priority</a>(ci);</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;            <span class="keywordflow">if</span> (energy != <a class="code" href="a02661.html">ModBaseT&lt;Mesh&gt;::ILLEGAL_COLLAPSE</a>) {</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;              <span class="comment">// Check if the current samples energy is better than any energy before</span></div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;              <span class="keywordflow">if</span> (energy &lt; bestEnergy) {</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;                bestEnergy = energy;</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;                bestHandle = tmpHandle;</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;              }</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;            }</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;          <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        }</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;      }</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    }</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    <span class="comment">// Found the best energy?</span></div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    <span class="keywordflow">if</span> ( bestEnergy != FLT_MAX ) {</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;      <span class="comment">// setup collapse info</span></div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;      <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, bestHandle);</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;      <span class="comment">// check topological correctness AGAIN !</span></div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci))</div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;      <span class="comment">// adjust complexity in advance (need boundary status)</span></div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;      <span class="comment">// One vertex is killed by the collapse</span></div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;      --nv;</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;      <span class="comment">// If we are at a boundary, one face is lost,</span></div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;      <span class="comment">// otherwise two</span></div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;      <span class="keywordflow">if</span> (mesh_.is_boundary(ci.<a class="code" href="a02633.html#a5167e49665056a7a8b6bcc6b6915c09e">v0v1</a>) || mesh_.is_boundary(ci.<a class="code" href="a02633.html#a53dc5ea9882b3097b8281142c0bdb225">v1v0</a>))</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        --nf;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;      <span class="keywordflow">else</span></div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        nf -= 2;</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;      <span class="comment">// pre-processing</span></div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;      this-&gt;<a class="code" href="a02629.html#a5a2763cdc33d785a1f53aed2168a7189">preprocess_collapse</a>(ci);</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;      <span class="comment">// perform collapse</span></div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;      mesh_.collapse(bestHandle);</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;      ++n_collapses;</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;      <span class="comment">// store current collapses state</span></div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;      oldCollapses = n_collapses;</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;      noCollapses = 0;</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;      collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;      <span class="keywordflow">if</span> (update_normals)</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;      {</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        <span class="comment">// update triangle normals</span></div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        <span class="keyword">typename</span> <a class="code" href="a02389.html#a1ebe8b94ca30db3af44c809ab3ee7247">Mesh::VertexFaceIter</a> vf_it = mesh_.vf_iter(ci.<a class="code" href="a02633.html#a7e472c32525398eeb34cad7c52aa3651">v1</a>);</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        <span class="keywordflow">for</span> (; vf_it.is_valid(); ++vf_it)</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;          <span class="keywordflow">if</span> (!mesh_.status(*vf_it).deleted())</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            mesh_.set_normal(*vf_it, mesh_.calc_face_normal(*vf_it));</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;      }</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;      <span class="comment">// post-process collapse</span></div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;      this-&gt;<a class="code" href="a02629.html#a8a3153d5847b381262fc15d110c3f10e">postprocess_collapse</a>(ci);</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;      <span class="comment">// notify observer and stop if the observer requests it</span></div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#a181b92fd81aea37771dbbe9d0f7b4b30">notify_observer</a>(n_collapses))</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;          <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;</div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;      <span class="keywordflow">if</span> (oldCollapses == n_collapses) {</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;        <span class="keywordflow">if</span> (collapsesUnchanged == <span class="keyword">false</span>) {</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;          noCollapses = 1;</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;          collapsesUnchanged = <span class="keyword">true</span>;</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;          noCollapses++;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;        }</div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;      }</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;    }</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;  }</div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;  <span class="comment">// DON&#39;T do garbage collection here! It&#39;s up to the application.</span></div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;  <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;}</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">//-----------------------------------------------------------------------------</span></div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;</div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Mesh&gt;</div><div class="line"><a name="l00369"></a><span class="lineno"><a class="line" href="a02645.html#abb7c3b986b8319da869023e2c1dfc44b">  369</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="a02645.html#abb7c3b986b8319da869023e2c1dfc44b">McDecimaterT&lt;Mesh&gt;::decimate_constraints_only</a>(<span class="keywordtype">float</span> _factor) {</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;  <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#ac01a4c49f9efd1de8ef886f7ff2b58ca">is_initialized</a>())</div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;</div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;  <span class="keywordflow">if</span> (_factor &lt; 1.0)</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;    this-&gt;<a class="code" href="a02629.html#a2ee8ed71b9fdf8524d12cfae47f63ed9">set_error_tolerance_factor</a>(_factor);</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n_collapses(0);</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;  <span class="keywordtype">size_t</span>       nv = mesh_.n_vertices();</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;  <span class="keywordtype">size_t</span>       nf = mesh_.n_faces();</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;  <span class="keywordtype">bool</span> lastCollapseIllegal = <span class="keyword">false</span>;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;  <span class="comment">// number of illegal collapses that occurred in a row</span></div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> illegalCollapses = 0;</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;  <span class="keywordtype">bool</span> collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  <span class="comment">// old n_collapses in order to check for convergence</span></div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oldCollapses = 0;</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="comment">// number of iterations where no new collapses where</span></div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;  <span class="comment">// performed in a row</span></div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> noCollapses = 0;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;  <span class="keywordtype">double</span> energy     = FLT_MAX;</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;  <span class="keywordtype">double</span> bestEnergy = FLT_MAX;</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;  <a class="code" href="a02613.html">RandomNumberGenerator</a> randGen(mesh_.n_halfedges());</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;  <span class="keywordflow">while</span> ((noCollapses &lt;= 50) &amp;&amp; (illegalCollapses &lt;= 50) &amp;&amp; (nv &gt; 0) &amp;&amp; (nf &gt; 1)) {</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    <span class="comment">// Optimal id and value will be collected during the random sampling</span></div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle bestHandle(-1);</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    <span class="keyword">typename</span> Mesh::HalfedgeHandle tmpHandle(-1);</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;    bestEnergy = FLT_MAX;</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="preprocessor">#ifndef WIN32</span></div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> randomNormalizer = (1.0 / RAND_MAX) * (mesh_.n_halfedges() - 1);</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;    <span class="comment">// Generate random samples for collapses</span></div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; (int) randomSamples_; ++i) {</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;      <span class="comment">// Random halfedge handle</span></div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle(<span class="keywordtype">int</span>(randGen.getRand()  * double(mesh_.n_halfedges() - 1.0)) );</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;      tmpHandle = <span class="keyword">typename</span> Mesh::HalfedgeHandle(<span class="keywordtype">int</span>(rand() * randomNormalizer ) );</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;      <span class="comment">// if it is not deleted, we analyze it</span></div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;      <span class="keywordflow">if</span> (!mesh_.status(mesh_.edge_handle(tmpHandle)).deleted()) {</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;        <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, tmpHandle);</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        <span class="comment">// Check if legal we analyze the priority of this collapse operation</span></div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        <span class="keywordflow">if</span> (this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci)) {</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;            energy = this-&gt;<a class="code" href="a02629.html#a3046073cf42608d314df3c4dfc2d49b4">collapse_priority</a>(ci);</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;            <span class="keywordflow">if</span> (energy == <a class="code" href="a02661.html">ModBaseT&lt;Mesh&gt;::ILLEGAL_COLLAPSE</a>) {</div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;              <span class="keywordflow">if</span> (lastCollapseIllegal) {</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;                illegalCollapses++;</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;              } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;                illegalCollapses = 1;</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;                lastCollapseIllegal = <span class="keyword">true</span>;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;              }</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;            } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;              illegalCollapses = 0;</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;              lastCollapseIllegal = <span class="keyword">false</span>;</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;              <span class="comment">// Check if the current samples energy is better than any energy before</span></div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;              <span class="keywordflow">if</span> (energy &lt; bestEnergy) {</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;                bestEnergy = energy;</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;                bestHandle = tmpHandle;</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;              }</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;            }</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;          <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        }</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;      }</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;    }</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;</div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;    <span class="comment">// Found the best energy?</span></div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;    <span class="keywordflow">if</span> ( bestEnergy != FLT_MAX ) {</div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;</div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;      <span class="comment">// setup collapse info</span></div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;      <a class="code" href="a02633.html">CollapseInfo</a> ci(mesh_, bestHandle);</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;      <span class="comment">// check topological correctness AGAIN !</span></div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">is_collapse_legal</a>(ci))</div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;        <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;      <span class="comment">// adjust complexity in advance (need boundary status)</span></div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;      <span class="comment">// One vertex is killed by the collapse</span></div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;      --nv;</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;      <span class="comment">// If we are at a boundary, one face is lost,</span></div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;      <span class="comment">// otherwise two</span></div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;      <span class="keywordflow">if</span> (mesh_.is_boundary(ci.<a class="code" href="a02633.html#a5167e49665056a7a8b6bcc6b6915c09e">v0v1</a>) || mesh_.is_boundary(ci.<a class="code" href="a02633.html#a53dc5ea9882b3097b8281142c0bdb225">v1v0</a>))</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;        --nf;</div><div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;      <span class="keywordflow">else</span></div><div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;        nf -= 2;</div><div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div><div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;      <span class="comment">// pre-processing</span></div><div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;      this-&gt;<a class="code" href="a02629.html#a5a2763cdc33d785a1f53aed2168a7189">preprocess_collapse</a>(ci);</div><div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;</div><div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;      <span class="comment">// perform collapse</span></div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;      mesh_.collapse(bestHandle);</div><div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;      ++n_collapses;</div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;      <span class="comment">// store current collapses state</span></div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;      oldCollapses = n_collapses;</div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;      noCollapses = 0;</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;      collapsesUnchanged = <span class="keyword">false</span>;</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;      <span class="comment">// update triangle normals</span></div><div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;      <span class="keyword">typename</span> <a class="code" href="a02389.html#a1ebe8b94ca30db3af44c809ab3ee7247">Mesh::VertexFaceIter</a> vf_it = mesh_.vf_iter(ci.<a class="code" href="a02633.html#a7e472c32525398eeb34cad7c52aa3651">v1</a>);</div><div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;      <span class="keywordflow">for</span> (; vf_it.is_valid(); ++vf_it)</div><div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;        <span class="keywordflow">if</span> (!mesh_.status(*vf_it).deleted())</div><div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;          mesh_.set_normal(*vf_it, mesh_.calc_face_normal(*vf_it));</div><div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;</div><div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;      <span class="comment">// post-process collapse</span></div><div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;      this-&gt;<a class="code" href="a02629.html#a8a3153d5847b381262fc15d110c3f10e">postprocess_collapse</a>(ci);</div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;</div><div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;      <span class="comment">// notify observer and stop if the observer requests it</span></div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;      <span class="keywordflow">if</span> (!this-&gt;<a class="code" href="a02629.html#a181b92fd81aea37771dbbe9d0f7b4b30">notify_observer</a>(n_collapses))</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;          <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;</div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;    } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;      <span class="keywordflow">if</span> (oldCollapses == n_collapses) {</div><div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;        <span class="keywordflow">if</span> (collapsesUnchanged == <span class="keyword">false</span>) {</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;          noCollapses = 1;</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;          collapsesUnchanged = <span class="keyword">true</span>;</div><div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;          noCollapses++;</div><div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;        }</div><div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;      }</div><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;    }</div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;</div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;  }</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;  <span class="keywordflow">if</span> (_factor &lt; 1.0)</div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;    this-&gt;<a class="code" href="a02629.html#a2ee8ed71b9fdf8524d12cfae47f63ed9">set_error_tolerance_factor</a>(1.0);</div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;  <span class="comment">// DON&#39;T do garbage collection here! It&#39;s up to the application.</span></div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;  <span class="keywordflow">return</span> n_collapses;</div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;</div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;}</div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;</div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;<span class="comment">//=============================================================================</span></div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;}<span class="comment">// END_NS_MC_DECIMATER</span></div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;} <span class="comment">// END_NS_OPENMESH</span></div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="comment">//=============================================================================</span></div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;</div><div class="ttc" id="a02633_html_a7e472c32525398eeb34cad7c52aa3651"><div class="ttname"><a href="a02633.html#a7e472c32525398eeb34cad7c52aa3651">OpenMesh::Decimater::CollapseInfoT::v1</a></div><div class="ttdeci">Mesh::VertexHandle v1</div><div class="ttdoc">Remaining vertex. </div><div class="ttdef"><b>Definition:</b> CollapseInfoT.hh:92</div></div>
<div class="ttc" id="a02629_html_a8a3153d5847b381262fc15d110c3f10e"><div class="ttname"><a href="a02629.html#a8a3153d5847b381262fc15d110c3f10e">OpenMesh::Decimater::BaseDecimaterT::postprocess_collapse</a></div><div class="ttdeci">void postprocess_collapse(CollapseInfo &amp;_ci)</div><div class="ttdoc">Post-process a collapse. </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT_impl.hh:167</div></div>
<div class="ttc" id="a02629_html_a5a2763cdc33d785a1f53aed2168a7189"><div class="ttname"><a href="a02629.html#a5a2763cdc33d785a1f53aed2168a7189">OpenMesh::Decimater::BaseDecimaterT::preprocess_collapse</a></div><div class="ttdeci">void preprocess_collapse(CollapseInfo &amp;_ci)</div><div class="ttdoc">Pre-process a collapse. </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT_impl.hh:179</div></div>
<div class="ttc" id="a02633_html_a53dc5ea9882b3097b8281142c0bdb225"><div class="ttname"><a href="a02633.html#a53dc5ea9882b3097b8281142c0bdb225">OpenMesh::Decimater::CollapseInfoT::v1v0</a></div><div class="ttdeci">Mesh::HalfedgeHandle v1v0</div><div class="ttdoc">Reverse halfedge. </div><div class="ttdef"><b>Definition:</b> CollapseInfoT.hh:90</div></div>
<div class="ttc" id="a02633_html_a5167e49665056a7a8b6bcc6b6915c09e"><div class="ttname"><a href="a02633.html#a5167e49665056a7a8b6bcc6b6915c09e">OpenMesh::Decimater::CollapseInfoT::v0v1</a></div><div class="ttdeci">Mesh::HalfedgeHandle v0v1</div><div class="ttdoc">Halfedge to be collapsed. </div><div class="ttdef"><b>Definition:</b> CollapseInfoT.hh:89</div></div>
<div class="ttc" id="a02389_html_a1ebe8b94ca30db3af44c809ab3ee7247"><div class="ttname"><a href="a02389.html#a1ebe8b94ca30db3af44c809ab3ee7247">OpenMesh::PolyMeshT::VertexFaceIter</a></div><div class="ttdeci">Kernel::VertexFaceIter VertexFaceIter</div><div class="ttdoc">Circulator. </div><div class="ttdef"><b>Definition:</b> PolyMeshT.hh:166</div></div>
<div class="ttc" id="a02629_html_a3046073cf42608d314df3c4dfc2d49b4"><div class="ttname"><a href="a02629.html#a3046073cf42608d314df3c4dfc2d49b4">OpenMesh::Decimater::BaseDecimaterT::collapse_priority</a></div><div class="ttdeci">float collapse_priority(const CollapseInfo &amp;_ci)</div><div class="ttdoc">Calculate priority of an halfedge collapse (using the modules) </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT_impl.hh:154</div></div>
<div class="ttc" id="a02645_html_a24b41676c8b93a5587a2bb36dbfb0b94"><div class="ttname"><a href="a02645.html#a24b41676c8b93a5587a2bb36dbfb0b94">OpenMesh::Decimater::McDecimaterT::decimate_to_faces</a></div><div class="ttdeci">size_t decimate_to_faces(size_t _n_vertices=0, size_t _n_faces=0)</div><div class="ttdoc">Decimate to target complexity (vertices and faces). </div><div class="ttdef"><b>Definition:</b> McDecimaterT_impl.hh:226</div></div>
<div class="ttc" id="a02645_html_abb7c3b986b8319da869023e2c1dfc44b"><div class="ttname"><a href="a02645.html#abb7c3b986b8319da869023e2c1dfc44b">OpenMesh::Decimater::McDecimaterT::decimate_constraints_only</a></div><div class="ttdeci">size_t decimate_constraints_only(float _factor)</div><div class="ttdoc">Decimate only with constraints, while _factor gives the percentage of the constraints that should be ...</div><div class="ttdef"><b>Definition:</b> McDecimaterT_impl.hh:369</div></div>
<div class="ttc" id="a02629_html_ac01a4c49f9efd1de8ef886f7ff2b58ca"><div class="ttname"><a href="a02629.html#ac01a4c49f9efd1de8ef886f7ff2b58ca">OpenMesh::Decimater::BaseDecimaterT::is_initialized</a></div><div class="ttdeci">bool is_initialized() const</div><div class="ttdoc">Returns whether decimater has been successfully initialized. </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT.hh:111</div></div>
<div class="ttc" id="a02645_html_a61aed0a3dbbe2d939c2a99e5f3533454"><div class="ttname"><a href="a02645.html#a61aed0a3dbbe2d939c2a99e5f3533454">OpenMesh::Decimater::McDecimaterT::~McDecimaterT</a></div><div class="ttdeci">~McDecimaterT()</div><div class="ttdoc">Destructor. </div><div class="ttdef"><b>Definition:</b> McDecimaterT_impl.hh:91</div></div>
<div class="ttc" id="a02661_html"><div class="ttname"><a href="a02661.html">OpenMesh::Decimater::ModBaseT</a></div><div class="ttdoc">Base class for all decimation modules. </div><div class="ttdef"><b>Definition:</b> ModBaseT.hh:192</div></div>
<div class="ttc" id="a02645_html_afe1195415c6af21ccf2a887311f049ed"><div class="ttname"><a href="a02645.html#afe1195415c6af21ccf2a887311f049ed">OpenMesh::Decimater::McDecimaterT::McDecimaterT</a></div><div class="ttdeci">McDecimaterT(Mesh &amp;_mesh)</div><div class="ttdoc">Constructor. </div><div class="ttdef"><b>Definition:</b> McDecimaterT_impl.hh:76</div></div>
<div class="ttc" id="a02629_html_aebbb2f4afd23574937109486a4ac6d1b"><div class="ttname"><a href="a02629.html#aebbb2f4afd23574937109486a4ac6d1b">OpenMesh::Decimater::BaseDecimaterT::is_collapse_legal</a></div><div class="ttdeci">bool is_collapse_legal(const CollapseInfo &amp;_ci)</div><div class="ttdoc">Is an edge collapse legal? Performs topological test only. </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT_impl.hh:100</div></div>
<div class="ttc" id="a02629_html_a181b92fd81aea37771dbbe9d0f7b4b30"><div class="ttname"><a href="a02629.html#a181b92fd81aea37771dbbe9d0f7b4b30">OpenMesh::Decimater::BaseDecimaterT::notify_observer</a></div><div class="ttdeci">bool notify_observer(size_t _n_collapses)</div><div class="ttdoc">returns false, if abort requested by observer </div><div class="ttdef"><b>Definition:</b> BaseDecimaterT.hh:191</div></div>
<div class="ttc" id="a02629_html"><div class="ttname"><a href="a02629.html">OpenMesh::Decimater::BaseDecimaterT</a></div><div class="ttdef"><b>Definition:</b> BaseDecimaterT.hh:85</div></div>
<div class="ttc" id="a02629_html_a2ee8ed71b9fdf8524d12cfae47f63ed9"><div class="ttname"><a href="a02629.html#a2ee8ed71b9fdf8524d12cfae47f63ed9">OpenMesh::Decimater::BaseDecimaterT::set_error_tolerance_factor</a></div><div class="ttdeci">void set_error_tolerance_factor(double _factor)</div><div class="ttdoc">This provides a function that allows the setting of a percentage of the original constraint of the mo...</div><div class="ttdef"><b>Definition:</b> BaseDecimaterT_impl.hh:191</div></div>
<div class="ttc" id="a00557_html"><div class="ttname"><a href="a00557.html">McDecimaterT.hh</a></div></div>
<div class="ttc" id="a02645_html_a970cfba9e739a07ff77fa1969e97ad82"><div class="ttname"><a href="a02645.html#a970cfba9e739a07ff77fa1969e97ad82">OpenMesh::Decimater::McDecimaterT::decimate</a></div><div class="ttdeci">size_t decimate(size_t _n_collapses)</div><div class="ttdoc">Decimate (perform _n_collapses collapses). </div><div class="ttdef"><b>Definition:</b> McDecimaterT_impl.hh:102</div></div>
<div class="ttc" id="a02613_html"><div class="ttname"><a href="a02613.html">OpenMesh::RandomNumberGenerator</a></div><div class="ttdoc">Generate a random number between 0.0 and 1.0 with a guaranteed resolution ( Number of possible values...</div><div class="ttdef"><b>Definition:</b> RandomNumberGenerator.hh:77</div></div>
<div class="ttc" id="a01233_html"><div class="ttname"><a href="a01233.html">OpenMesh</a></div><div class="ttdoc">Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...</div><div class="ttdef"><b>Definition:</b> MeshItems.hh:59</div></div>
<div class="ttc" id="a02633_html"><div class="ttname"><a href="a02633.html">OpenMesh::Decimater::CollapseInfoT</a></div><div class="ttdoc">Stores information about a halfedge collapse. </div><div class="ttdef"><b>Definition:</b> CollapseInfoT.hh:74</div></div>
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